most palestinians take it as a given that israel is responsible. for them, the only question is which poison was used. >> i am sending a question to all the world to help us determine the truth in the killing of yasir arafat. i hope that exhuming yasser arafat's body today will reveal the truth, and we will know the circumstances of the death of our leader. >> but this investigation may not solve the mystery. polonium 210 breaks down very quickly. results are not expected for at least three months. >> the black forest town is mourning the 14 people who died in a fire in a workshop yesterday. >> condolences have been coming in from around the country. fire officials say the blaze was caused by a defective gas heating unit that exploded. >> candles and flowers for the victims of the fire. the community is struggling to cope with the tragedy. >> there are no words to describe it. it is especially hard for the families of the victims. >> there is simply nothing more one can say or do. it is just awful. >> fire investigators now believe the fire was cau